Dyfyniad APA

Pullis, J. M., & Pullis, C. D. (1991). Principles of speedwriting (Regency 2 ed.). Glencoe/McGraw-Hill.

Dyfyniad Arddull Chicago

Pullis, Joe M., and Cheryl D. Pullis. Principles of Speedwriting. Regency 2 ed. Mission Hills, Calif.: Glencoe/McGraw-Hill, 1991.

Dyfyniad MLA

Pullis, Joe M., and Cheryl D. Pullis. Principles of Speedwriting. Regency 2 ed. Glencoe/McGraw-Hill, 1991.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.